Definition of Aluminum 6063 | EN AW-6063 | 62400 | AlMg0,7Si
Aluminum 6063 | EN AW-6063 | 62400 | AlMg0,7Si is a lightweight aluminum alloy made mainly with magnesium and silicon. It is known for good corrosion resistance, easy forming, good weldability, and a smooth surface finish. It is especially popular for extruded profiles and decorative parts. Aluminum 6063 is commonly used for frames, tubes, railings, housings, architectural parts, automotive components, and CNC-machined products.
Properties of Aluminum 6063 | EN AW-6063 | 62400 | AlMg0,7Si
| Property | Value |
|---|---|
| Mechanical Properties | |
| Ultimate tensile strength | 110 – 210 MPa |
| Yield strength | 55 – 130 MPa |
| Young’s modulus (modulus of elasticity) | 68 – 69 GPa |
| Elongation at break | 8 – 18 % |
| Physical Properties | |
| Corrosion resistance | High |
| Magnetism | Non-magnetic |
| Weldability | Good |
| Thermal Properties | |
| Thermal expansion coefficient | 23 – 25.6 × 10-6/ºC |
| Thermal conductivity | 190 – 220 W/(m⋅°C) |
| Electrical Properties | |
| Electrical resistivity | 3.32 μΩ*cm |
| Post Treatments | |
| Post-Processing | Hot & Cold working, Aging, Hardening |
| Anodizing compatibility | Suitable |
| Common Applications | |
| Architectural products | Door and window frames |
| Pipe and tubes for irrigation systems | Electrical components |
Why Aluminum 6063 | EN AW-6063 | 62400 | AlMg0,7Si Matters in CNC Workshops
- Good corrosion resistance: Aluminum 6063 performs well in many indoor, outdoor, and industrial environments.
- Suitable for CNC machining: It can be milled, drilled, turned, and cut to produce accurate custom parts.
- Excellent surface finish: The alloy can produce smooth-looking parts and works very well with anodizing and other finishing processes.
- Great for profiles and custom shapes: Aluminum 6063 is easy to extrude into complex shapes, making it useful for frames, rails, housings, and other CNC-finished profiles.
Surface Finishes for Aluminum 6063 | EN AW-6063 | 62400 | AlMg0,7Si
As-Machined
The default finish from CNC machining plastic stock (Delrin, nylon, HDPE, ABS). Visible linear tool path scallop marks across machined surfaces with a matte plastic sheen. No secondary operation suitable for functional components, jigs, fixtures, and internal parts where cosmetic appearance is secondary to dimensional accuracy.
Flame Polished
Quick post-fabrication process that passes a controlled flame over acrylic (PMMA) cut edges, melting the surface micro-layer to produce a crystal-clear, glossy, transparent edge. Fast and cost-effective for acrylic sheet edges produces optical clarity on cut borders without the labor of hand polishing. Ideal for display cases, signage, and acrylic enclosures.
Vapor Polished
Post-fabrication chemical process that exposes transparent plastic parts (acrylic, PC, PETG) to solvent vapor, melting and smoothing the surface micro-layer to dramatically improve optical clarity and gloss. Removes machining lines and produces crystal-clear transparent parts — essential for prototype lenses, light guides, display windows, fluidic chambers, and medical components requiring optical transparency.
Painted
Post-fabrication spray painting in any custom color (matte, satin, gloss, metallic) followed by screen printing or pad printing for logos, labels, buttons, and graphics. Applied over a primed plastic surface for uniform color and adhesion. Allows custom fabricated plastic parts to match production aesthetics widely used for control panels, instrument faces, enclosures, and marketing/showcase components requiring exact brand color and graphic printing.
Sanded
Post-fabrication sanding with progressively finer grit sandpaper (typically 240–600 grit) produces a uniform low-gloss matte non-reflective surface. Hides machining marks, scratches, and surface inconsistencies while providing a soft tactile feel. Used for HDPE, UHMW, and nylon components where a durable, non-glare, fingerprint-resistant matte appearance is desired for industrial and functional parts.
Heat Formed
Thermoforming process that heats plastic sheet (acrylic, polycarbonate, ABS) to its glass transition temperature and bends it over a form tool to create precise angles and curved shapes. Produces clean, smooth bend radii with consistent surface finish no tool marks at the bend. Used for display stands, guards, enclosures, signage, and custom fabricated parts requiring 3D formed shapes from flat sheet stock.
